Yamaha F60CET Troubleshooting
| Engine Model: Yamaha F60CET |
| Engine Type: 4-stroke inline 4-cylinder SOHC 8-valve gasoline outboard engine |
| Total Displacement: 60.8 cu.in (996 cc) |
| Rated Engine Power: 60 Hp (44.1 kW) at 5500 rpm |
| Fuel System: Electronic Fuel Injection (EFI) |
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| Engine difficult to start or will not start |
Gas tank is empty - Fill fuel up.
Wrong grade of gasoline - Use correct fuel grade.
Air in fuel system - Bleed fuel system.
Spark plug wire is disconnected or loose - Inspect the spark plug wire connection, replace or repair.
Spark plug is damaged - Change spark plug.
Plugged fuel filter - Replace fuel filter.
Worn or damaged vapor separator needle valve - Change vapor separator needle valve.
Fuel lines are clogged - Fuel lines need to be cleaned.
Fuel tank air vent closed or restricted - Fuel tank air vent need to be opened or cleaned.
Damaged fuel feed pump - Replace or repair fuel pump.
Unadjusted or worn throttle cable - Adjust properly or change the cable.
Valve clearance is incorrect - Check and adjust.
Valve timing is incorrect - Set the valve timing properly.
Fuel pressure is low - Inspect fuel system for leaks or inspect low pressure fuel pump.
Damaged or clogged fuel injector - Replace or clean as required.
Fuel regulator malfunction - Install new fuel regulator.
Electronic control modul failure - Replace ECM.
| Engine starts but stalls immediately |
Defective spark plug - Replace spark plug.
Vapor separator needle valve is damaged or worn - Replace needle valve.
Ignition coil is faulty - Ignition coil should be replaced.
Fuel tank air vent closed or restricted - Open or clean air vent.
Defective fuel pump - Replace or repair fuel pump.
Choke system malfunction - Check and repair choke system.
Valve clearance is wrong - Need to adjust valve clearance.
Wrong valve timing - Adjust valve timing correctly.
Valve springs are bad or broken - Install new valve springs.
Valves sticking - Valves must be cleaned.
Poor compression - Check and replace worn parts.
Dirty fuel filter - Change fuel filter.
Clogged or worn fuel injector - Replace or clean if necessary.
Low engine oil level - Fill up the engine oil.
Damaged oil pump - Replace oil pump.
Dirty water intake screen - Need to wash or clean.
Thermostat failure - Install new thermostat.
Water pump failure - Replace water pump.
Ignition failure - Inspect ignition system and change faulty parts.
Dirty or damaged fuel pump - Test fuel pump and change if necessary.
Damaged or wear vapor separator needle valve - Change vapor separator needle valve.
Fuel lines are dirty - Clean fuel lines.
Closed or clogged fuel tank air vent - Fuel tank air vent need to be opened or cleaned.
Fuel filter is plugged - Replace fuel filter.
Intake manifold air leaks - Replace intake manifold gasket.
Water intake is blocked - Need to clean or wash.
Throttle valve and throttle link are defective or worn - Change faulty parts.
Damaged or clogged fuel injector - Replace or clean as required.
Engine is under excessive load - Reduce engine load.
Clogged fuel pump or fuel injector - Replace or clean if necessary.
Bad ignition timing - Adjust ignition timing as required.
Defective thermostat - Install new thermostat.
Damaged water pump - Change water pump.
Propeller selection improperly - Check the propeller size.
Damaged or bent propeller - Have propeller repaired or replaced.
Outboard motor is mounted too high or too low - Mount the motor as required.
Not enough engine oil - Check oil level and add oil as required.
Oil pump is defective - Oil pump need to be replaced.
Dirty water intake screen - Wash or clean as required.
Valve setting is improper - Adjust valves correctly.
| Abnormal engine noise or knocking |
Stale or low octane fuel - Change fuel.
Engine overloaded - Reduce the load.
Improperly adjusted low idle speed - Adjust idle speed.
Dirty or defective fuel pump - Clean or install new fuel pump.
Worn main bearings or crankshaft - Repair or replace defective parts.
Piston rings or cylinder bore are worn - Change faulty parts.
Fuel lines clogging - Fuel lines must be clean.
Fuel injector is defective - Change fuel injector.
Fuel pump is damaged or dirty - Clean or install new fuel pump.
Ignition failure - Inspect ignition system and change faulty parts.
Blown cylinder head gasket - Replace the head gasket.
Faulty powerhead components - Replace defective parts.
Valves are stuck or burned - Replace or clean valves.
Improper propeller diameter or pitch - Install correct propeller.
Damaged or bent propeller - Have propeller repaired or replaced.
Outboard motor mounting height is set incorrectly - Adjust the engine to correct transom height.
Incorrect trim angle - Adjust trim angle.
| Engine uses too much fuel |
Damaged or clogged fuel injector - Clean or replace if necessary.
Defective or loose spark plug - Replace or tighten spark plug.
Worn sleeve, piston, or rings - Replace defective components.
ECU is not functioning - Replace ECU.
| Excessive engine vibration |
Damaged or bent propeller - Have propeller repaired or replaced.
Damaged propeller shaft - Propeller shaft needs to be replaced.
Weeds wraped around propeller - Remove and clean propeller.
Engine mounting bolt is not tightened - Tighten bolt.
Steering pivot is faulty or loose Tighten or replace.
Low battery power - Low battery charging, charge as required.
Battery drains quickly - Service battery or change it.
Battery cables are disconnected or terminals are faulty - Check wiring connections and replace or clean terminals.
Starter motor failure - Change or repair starter.
| Trim motor runs but trim system does not move up or down |
Lack of oil - Checking oil level and add if necessary.
Pump assembly is damaged - Check pump and change if required.
Manual release valve leaking - Valve need to be closed or changed.
Faulty pump driveshaft or motor - Change worn component.
| Trim does not fully up or down |
Defective pump assembly - Replace pump.
Tilt ram piston ball is not positioned correctly - Clean or repair.
Damaged tilt ram piston O-ring - Replace O-ring.
Oil insufficient - Check oil level and add oil as required.
Lower check valve not seating in port side trim ram - Secure valve properly.
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